#include "stm32f10x.h"

void TIM_Init(uint16_t per, uint16_t psc)
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
	NVIC_InitTypeDef NVIC_InitStruct;
	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
	
	TIM_TimeBaseInitStruct.TIM_CounterMode =TIM_CounterMode_Up;
	TIM_TimeBaseInitStruct.TIM_Period =per;
	TIM_TimeBaseInitStruct.TIM_Prescaler =psc;
	TIM_TimeBaseInitStruct.TIM_ClockDivision =TIM_CKD_DIV1;
	TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStruct);
	
	TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
	
	NVIC_InitStruct.NVIC_IRQChannel=TIM3_IRQn; // ????????
	NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority =0; // ????????0
	NVIC_InitStruct.NVIC_IRQChannelSubPriority =2; // // ???????0
	NVIC_InitStruct.NVIC_IRQChannelCmd =ENABLE; // ??????

	NVIC_Init(&NVIC_InitStruct);
	
	TIM_Cmd(TIM3, ENABLE);

}